Fireproof door and the like.



G. CROSSLEY.

HRBPROOF Doon AND THB LIKE. APPLIOATION FILED DEG. 9, 1911.

1,064,293. Patented June 1o, 1913.

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- GEORG-E CROSSLEY, 0F MANCHESTER, ENGLAND.

FIREPROOF DOOR AND THE LIKE.

Application filed December 9, 1911.

VTo all wimmz' may concern.'

Be it known that I, GEORGE CnossLnY, subject of the King of Great Britain and Ireland, and resident of Manchester, in the county of Lancaster, England, engineer, have invented certain new and useful lmprovements in and Relating to Fireproof Doors and the Like, of which the following is a specification.

My invention relates to improvements in and in connection with lire-resisting doors, shutters and the like, such as are used for closing communication between one room or compartment of a building or other structure and another, and for preventing` the spread of fire to the room or rooms or co-mpartment adjacent to that in which the tire originates. Doors of this class when mainly made of large sheets of metal have usually a tendency to bulge or twist out of shape under the great heat of a fire so allo-wing the latter to pass into the adjacent room or rooms.

My object is to provide a door of improved construction and parts connected therewith7 which will allow of expansion of its parts under heat without bulging or warping to a detrimental extent and so largely minimize or entirely prevent the danger of fire passing beyond it to another room or compartment.

To this end my invention consists in the provision of a door or shutter composed of a plurality of metallic members of solid or hollow formation arranged side by side in two or more layers to the required thickness, the members of one layer running parallel to or being arranged opposite to or in staggered formation with those of the remaining layers the edges of such members being disposed at any suitable angle to each other while their plane surfaces remain parallel, one or more layers or series of strips of asbestos or other ire-retarding material located in or between the metallic members, means for inclosing the outer edges of the doors or shutters, means for suspending or hinging and bracing the doors, means for connecting the metallic members to each other or to the frame structure of the door while allowing for adequate expansion under heat, and automatically-acting means for holding the door in position during the progress of a ire.

My invention will be fully described with Specification of Letters Patent.

Patented J une 10, 1913.

Serial No. 664,885.

reference to the accompanying drawings in which,

Figure l is a perspe-ctive view of part of one form of metallic member used in the construction of the door or shutter, Fig. 2 a partial sectional plan through a portion of the door, Fig. 3 sectional plan of Yan inclosing strip fo-r the door edges, Fig. 4 elevation of a complete door, Fig. 5 partial sectional plan to an enlarged scale of the doo-r shown in Fig. 4C, Fig. 6 partial sectional plan of a modified arrangement of metallic members of a door, Fig. 7 elevation of a door showing a modified arrangement of the metallic members, Fig. 8 enlarged sectional plan showing a portion of the door in Fig. 7 and Figs. 9 and l0, sectional plans to an enlarged scale showing means of connecting the metallic members together.

In accordance with my invention I construct the main po-rtion of the door of hollow metal members a as in Fig. l showing a hollow section provided with ianges c at its inner side so as to leave a longitudinal slot Z between their edges. `The members a are arranged side by side so as to form two or more layers, two such layers being indicated in Fig. 2. The members of one layer are in some cases arranged as shown in Fig. et that is to say, at right angles to the members of the other layer and making an angle of i5 degrees with the edges of the door, the front layer being indicated by full lines and the rear layer by broken lines. in Fig. 8 they are also at right angles, the front layer being vertical and the rear layer horizontal, the latter being indicated by bro-ken lines. in Fig. T solid members are employed all arranged vertically as to the three layers, the outer layers being opposite to each other while the inner layer is in staggered formation or arranged to break joint with them. The members may be arranged with their longitudinal edges close together as shown in Figs. 4 and 6 and in Fig. 8 though they may be arranged a little distance apart as in Fig. 7.

The ends of the metallic members may be or are usually inclosed by a metal frame e preferably of channel format-ion as shown in Fig. 3 and may be secured thereto by rivets, bolts or the like at each end or in certain cases at one end only, so as to allow for longitudinal expansion of the members under heat and so prevent twisting, warping or buckling of the door. ln the section indicated in Fig. 2 l have shown three layers of asbestos or like iire-retarding material f located between the layers or metallic members which are secured thereto by various methods. Thus in Fig. S) l employ rivets g having mushroom or other shaped heads or flanges beneath which are located metal washers 7L ot sutlicient diameter to span the longitudinal slots CZ. The rivets are placed through the lire-retarding material first with their washers in position and are then riveted over, sutiicient length of rivet being allowed to enable the metallic members o to be slid into position with their tlanges c beneath the washers thus lixing the outer layers and inner laf-,fers together after which the inelosing frame c is iixed in position. Fig. l0 shows a substantially similar arrangement except that bolts 'a' are employed.

In Figs. l, 5 and G the bands or hinges le are arranged intermediately of the outer metallic members, rivets g as in Fig. 9 being passed through the hinges as well as the single asbestos layer f to hold the parts together. Longer rivets fm, secure the inclosing trame e; in llig. 6 the metallic members are secured to the hinges Z: by set-screws a passing into tapped holes in the hinges, such set-screws and likewise the asbestos layer being placed in position lirst before the metallic members are assembled in the manner previously mentioned.

ln F ig. 7 the metallic members a are secured to the hinges 7:: in a similar manner to that indicated in Fig, 5 while for further support braces or struts 0 are employed to hold the door in rectangular formation.

If any of the hollow metallic members expand in length under heat, the light metal inclosing iframe e gives way as this is also subject to practically the same heat and is, therefore, in a somewhat pliable condition. lt they expand in width or thickness the metal being light, `g'ves way without seriously aliecting the lire-resisting qualities ot the door. ln the case ot doors consisting of three or more layers of metallic members any metallic member may expand without affecting the surrounding members. it will, therefore be seen that by the arrangement ot metallic members hereinbetore de- Copies of this patent may be obtained for-five cents each, by addressing the Commissioner of Patents,

scribed a door or shutter is provided which will withstand great heat with little or no distortion and thus prevent tire spreading lire-resisting material, of a series of hollow metallic facing-members arranged side by side and provided with ilanges which rest on the said body-portion, washer-plates bearing on the said langes, and fastening devices carried by the said body-portion and holding the washer-plates in position, said flanges being slidable under the said washerplates as the metallic facing-members eX- pand and contract.

2. ln a device of the character described, the combination, with a body-portion of tireresisting* material, of two series of hollow metallic facing-members arranged side by side and upon each side of the said bodyportion, said facing-members being provided with l'langes which rest on the said body-portion, washer-plates bearing on the said iianges, and fastening devices, each carried by the said body-portion and engaging with two washer-plates, said flanges being slidable under the washer-plates.

3. ln a device oit the character described, the combination, with a body-portion of lireresisting material, of two series ot hollow metallic facing-members arranged side by side and upon each side of the said bodyportion, the facing-members on one side being arranged erosswise ot' the facing-members on the other side, and the said facingmembers being provided with flanges which rest on the said body-portion, washerplates bearing 'on the said flanges, and tastening devices carried by the said body-portion and holding the washer-plates in position, said ilanges being slidable under the said washer-plates.

In testimony whereof I have hereunto set my hand in the presence of two witnesses.

GEORGE CROSSLEY.

ll/Titnesses .loi-1N Terrien, VILLIAM HENRY TAYLOR.

Washington, D. C. 

